Virtual Current Representation of Magnetic Fields for Electric Motor Design

3. The method of claim 1 wherein fitting the estimated magnetic field pattern to the magnetic field pattern comprises adjusting the one or more virtual current parameters to minimize an error between the estimated magnetic field pattern and the magnetic field pattern.

4. The method of claim 3 wherein fitting the estimated magnetic field pattern to the magnetic field pattern comprises, in response to determining that the error exceeds an error threshold, increasing a number of virtual currents and refitting the estimated magnetic field pattern based on the increased number of virtual currents.

8. The method of claim 7 wherein determining an updated digital design for the electromagnetic device comprises one or more optimization steps that adjust at least one of the one or more design parameters with an objective of improving at least one of the one or more performance parameters.

9. The method of claim 8 further comprising outputting the updated digital design of the electromagnetic device for manufacture.

10. The method of claim 8 further comprising controlling one or more manufacturing devices to manufacture one or more electromagnetic devices according to the updated digital design.

12. The method of claim 1 further comprising obtaining a digital design of the electromagnetic device, the digital design comprising geometric data representing a geometry of the electromagnetic device and material data representing material properties of the electromagnetic device, wherein the electromagnetic device is an electric motor or an electric generator.